$\frac{dy}{dx}=\frac{x^2-2y^2}{xy}$

$\left(1+\sec\left(x\right)^2\right)\sin\left(x\right)$

$\lim_{x\to\infty}\left(\sqrt{\frac{1+\sqrt[3]{x}}{1-\sqrt[3]{x}}}\right)$

$\left(-\frac{1}{8}m^3n^4\right)\left(-\frac{4}{5}a^3m^2n\right)$

$a3-5a+1\:entre\:a+2$

$\lim_{y\to\infty}\left(\frac{2y+3}{2y+1}\right)^{y+1}$

$\frac{x^2+17}{x-2}$